JP3884800B2 - IC card unauthorized use prevention device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an IC card used by specifying an owner such as an electronic money card, a credit card, a cash card, a commuter pass, a time card when leaving or leaving, and a door opening / closing card in a place where entry is restricted due to confidentiality. The present invention relates to an unauthorized use prevention device.
[0002]
[Prior art]
Conventionally, this type of IC card has a problem that specific data remains semi-permanently and can be misused by anyone other than the authorized owner.
In order to solve this problem, there has been proposed an IC card that erases memory data in the IC card by providing a timer mechanism in the IC card and counting up the initial timer value (special feature). (Kaisho 62-287388). According to such an IC card, there is less fear of being misused when the IC card is lost and passed to a person other than the authorized owner.
[0003]
[Problems to be solved by the invention]
However, the IC card that erases data after the elapse of the predetermined time as described above has a limited usable period even for a legitimate owner, and even if the period until the data is erased is set too short. For example, there are significant restrictions for the user, and the IC card may not be used when it is necessary. On the other hand, if the period until the data is erased is set to a long period, the risk of unauthorized use becomes greater when lost or stolen, and the meaning of erasing data is reduced.
[0004]
Accordingly, the present invention provides an apparatus for preventing unauthorized use of an IC card that can be used as it is when the user uses it normally, and that the IC card cannot be used immediately when the IC card is lost or stolen. With the goal.
[0005]
[Means for Solving the Problems]
An unauthorized use prevention device for an IC card according to a first aspect of the present invention comprises an IC card unauthorized use prevention device comprising an IC card and a transmitter for transmitting a radio signal to the IC card. A transmitter for transmitting a radio signal to the transmitter; a receiver for receiving a radio signal from the transmitter; and a storage for storing data for identifying an owner. A transmitting unit that transmits a radio signal to the IC card, a receiving unit that receives a radio signal from the IC card, and a storage unit that stores data for identifying the owner or the IC card. And when the predetermined radio signal cannot be transmitted / received between the transmitter and the IC card for a predetermined time, the data stored in the storage unit of each of the IC card and the transmitter is erased or disabled. And wherein the door.
[0006]
The IC card unauthorized use prevention apparatus according to claim 2 of the present invention is the IC card unauthorized use prevention apparatus according to claim 1, wherein the transmitter is set with data for identifying the owner or the IC card. And an input means for transmitting the input data to the storage unit of the IC card by the transmitter.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The IC card unauthorized use preventing apparatus of the present invention comprises an IC card and a transmitter for transmitting a radio signal to the IC card. Here, the transmitter is portable and portable and has a size and weight that can be put in a bag, attached to a belt, or hung from a neck. Furthermore, it is more desirable if it is a form for accessories such as pendants, brooches, and bracelets. Further, the wireless function of the transmitter is a level that reaches the IC card when a person carries it at the same time as the IC card, for example, within 1 meter or several meters. Furthermore, it is preferable that the radio waves of the transmitter have no directivity.
[0008]
In the IC card unauthorized use preventing apparatus according to the first embodiment of the present invention, the IC card includes a transmitter that transmits a radio signal to the transmitter, and a receiver that receives the radio signal from the transmitter. A storage unit that stores data for identifying the owner, and the transmitter includes a transmission unit that transmits a radio signal to the IC card, a reception unit that receives a radio signal from the IC card, A storage unit for storing data for identifying the owner or the IC card, and when the predetermined radio signal cannot be transmitted and received between the transmitter and the IC card for a predetermined time, the storage of each of the IC card and the transmitter The data stored in the section is erased or cannot be used.
First, as in this embodiment, by providing the transmitter side with data for identifying the owner or the IC card, the data of the radio signal can be made unique using this data. , Can increase security. Also, security can be further enhanced by exchanging bidirectional signals between the IC card and the transmitter. Also, the data on the transmitter side can be further improved by erasing the data according to the signal state from the IC card.
[0009]
The device for preventing unauthorized use of an IC card of the present invention in the second embodiment is provided with an input means for setting data for identifying the owner or the IC card in the transmitter, and this input is performed by the transmitter. The data can be transmitted to and stored in the storage unit of the IC card. The IC card unauthorized use prevention apparatus of the present invention in the first embodiment cannot be used after the data in the storage unit is erased. Even if a legitimate user possesses the data, the data may be erased or made unusable by storing the transmitter and the IC card separately. The present embodiment makes it possible to return to a usable state again in such a case.
Here, the input means to be provided in the transmitter means an input terminal that can be connected to other devices having a key input unit in addition to an input unit having a key input unit capable of inputting data. Is also included. In the case of having a key input unit uniquely, it has the convenience that data can be easily input even when going outside, but in the case of an input terminal, it is excellent in terms of reducing the size and weight of the transmitter.
As in this embodiment, the erased data can be easily reset, so that the IC card and the transmitter are stored in separate locations at the time of storage, for example, at night. Alternatively, the data for identifying the owner or the IC card can be erased from the transmitter to increase the security at the time of theft.
[0010]
【Example】
Hereinafter, a case where an embodiment of the IC card unauthorized use preventing apparatus of the present invention is applied to an electronic money card will be described with reference to the drawings. FIG. 1 is a block diagram showing an unauthorized use prevention device for the IC card as function realizing means.
The apparatus comprises an IC card 10 and a transmitter 20 as shown in the figure.
The IC card 10 includes a data processing unit 11 including a microprocessor, first and second storage units 12 and 13 that are electrically rewritable, a use stop unit 14 that erases data in the second storage unit, and an external device. Receiving section 15 for receiving the radio signal, power supply section 16 for supplying power thereto, and display section 17 for displaying the status of the card.
The data processing unit 11 performs processing based on data stored in the first and second storage units 12 and 13 and data from an external information processing apparatus, and whether the data received by the receiving unit 15 is correct. In other words, the received data is stored in the second storage unit 13 or the data in the second storage unit 13 is erased. The data processing unit 11 has a terminal 11a for electrical connection with an external information processing apparatus. The first storage unit 12 stores part of owner identification data and personal identification number data, in addition to data relating to the intended use of the card such as the balance of cash and the place of use. The second storage unit 13 stores a part of the owner identification data. In this embodiment, for example, if the personal identification data is “ABCDE” consisting of 5 digits and the personal identification number data is “FG”, the first storage unit 12 stores “AXXDE” as part of the personal identification data. And “FG” which is the personal identification number data, and “XBCXE” is stored in the second storage unit 13 as a part of the personal identification data. The use stopping unit 14 counts a timer value, and outputs a signal for erasing data stored in the second storage unit 13 when the timer value is counted, and a signal from the receiving unit 15 A reset unit 19 for setting the timer value to an initial value. The power supply unit 16 supplies power to the data processing unit 11, the first and second storage units 12 and 13, the use stop unit 14, and the reception unit 15, and includes a secondary battery, and includes a transmitter 20. Power is supplied by transmission from. The display unit 17 lights up when the IC card 10 is in use, flashes when the predetermined signal from the transmitter 20 is normally received, and turns off when the IC card 10 is not usable. .
[0011]
On the other hand, the transmitter 20 includes an input unit 21 for inputting user-specific data for identifying the user himself / herself, a storage unit 22 for storing the input data, and the stored data and power at predetermined intervals. , A transmission unit 23 for transmitting the power, a storage unit 22, a power supply unit 24 for supplying power to the transmission unit 23, and a display unit 25 for displaying the status of the transmitter. The display method of the display unit 25 is the same as that of the IC card 10.
Here, the input means does not necessarily have an input key or the like, and may be a connection terminal that can be connected to an external device having the input key or the like.
[0012]
Next, the usage state of the IC card unauthorized use preventing apparatus according to the present embodiment will be described.
First, the case where the IC card 10 is used will be described.
The IC card is electrically connected to an external information processing apparatus to exchange data. Normal data transfer is performed by inserting an IC card into a predetermined insertion slot of an external information processing apparatus and connecting the terminal 11a of the data processing unit 11, but is performed by a non-contact type method using a radio signal. In some cases. In the data transfer, an information processing apparatus that can perform identity verification by key input or the like first inputs a password or the like to check whether or not the IC card 10 is owned. In the present embodiment, since the password data is stored in the first storage unit 12, the password can be confirmed even in an external information processing apparatus not connected to the host computer. When the owner confirmation is necessary, the owner identification data stored in the first and second storage units 12 and 13 of the IC card 10 are read to identify the owner. Here, when using an external information processing apparatus connected to the host computer, the data for owner identification stored in the first and second storage units 12 and 13 of the IC card 10 are used as they are. It is preferable that the determination is made by transmitting and synthesizing by the host computer. In addition, it is preferable that the data processing unit 11 performs a synthesis process when it is necessary to identify the person in an external processing apparatus that is not connected to the host computer. Thereafter, the IC card is used based on the data stored in the second storage unit 12 or data from the outside according to the purpose of use of the card. Further, the balance calculation and the like can be appropriately performed by the data processing unit 11, and the result is stored in the first storage unit 12. In addition, the usage method of the above IC cards 10 changes with kinds of IC card, and is not limited by the usage method.
[0013]
Next, the case where the IC card unauthorized use preventing apparatus according to the present embodiment is carried will be described.
Usually, the IC card 10 is carried in a wallet or a regular case, and the transmitter is carried in a bag or handbag, attached to a belt, or worn like a bracelet. The carrying method is not particularly limited, but it is necessary that the IC card 10 and the transmitter 20 be carried within a certain distance. In the state where the IC card 10 and the transmitter 20 are both carried in this manner, the transmitter 20 transmits radio signals at predetermined intervals. The IC card 10 periodically receives the signal from the transmitter 20 at the receiving unit 15 unless the reception state is particularly bad. As described above, when the signal from the transmitter 20 is periodically received, the IC card 10 is kept in a usable state.
[0014]
The flow of internal processing of the IC card 10 that maintains such a usable state will be described with reference to FIG.
First, the receiving unit 15 receives the password data “FG” (step S01). The received personal identification number data “FG” is sent to the data processing unit 11, and the data processing unit 11 determines whether or not it matches the personal identification number data “FG” stored in the first storage unit 12. Judgment is made (step S02). Then, when the data processing unit 11 determines that the password number data match, it sends a signal to the reset unit 19 (step S03). Upon receiving this signal, the reset unit 19 outputs a signal for initializing the timer count to the timer unit 18 (step S04). As described above, as long as a predetermined signal is received by the receiving unit 15, a signal is periodically sent to the reset unit 19. Therefore, the count value of the timer unit 18 continues to be reset before the predetermined counting. Therefore, a signal for erasing data is not issued from the use stopping unit 14 to the second storage unit 13, and the data stored in the second storage unit 13 is retained.
A case where the IC card 10 is dropped will be described. If the person who has dropped the IC card 10 and has the transmitter 20 leaves the IC card 10, the radio signal from the transmitter 20 will not reach the IC card 10. Therefore, since the IC card 10 cannot receive a signal from the transmitter 20, no signal is sent to the reset unit 19. Since the reset signal is not sent from the reset unit 19 to the timer unit 18, the timer unit 18 continues to count the timer value. When the timer value is counted a predetermined time, a signal for erasing data is output from the use stopping unit 14 to the second storage unit 13 and the data in the second storage unit 13 is deleted.
In this way, in the state where the data in the second storage unit 13 is erased, a part of the data for identifying the user is erased and the user cannot be identified. Can not.
[0015]
Next, a method of returning the IC card 10 that has become unusable in this way to a reusable state will be described with reference to FIG.
First, data [ABCDE] for identifying the owner is input by the input means 21 of the transmitter 20 (step S21). At this time, the personal identification number data “FG” may also be input. The input data “ABCDE” is temporarily stored in the storage unit 22. When the password data is not input, it is assumed that it is stored in advance in the storage unit 22. The data stored in the storage unit 22 is sent to the transmission unit 23, and data “ABCDE” and identification number data “FG” for identifying the owner are transmitted from the transmission unit 23 (step S23). In the IC card 10, after receiving these data by the receiving part 15, this data is output to the data processing part 11 (step S12). First, the data processing unit 11 determines whether or not the personal identification number data “FG” stored in the first storage unit 12 matches the transmitted personal identification number data “FG” (step S12). If they match, it is next determined whether or not the data “AXXDE” for owner identification stored in the first storage unit 12 corresponds to the transmitted data “ABCDE” (step S13). ). Here, the fifth digit [A], the second digit “D”, and the first digit “E” are confirmed. If the numbers in the respective digits match, a part of the data for identifying the owner is stored in the second storage unit 13 (step S14). Here, the second storage unit 13 stores “XBCXE”. Which digit is to be stored can be processed by the data processing unit 11 using the comparison result with the first storage unit 12, or by writing restrictions to the second storage unit 13. is there. After the data is stored in the second storage unit 13 as described above, a signal is output from the data processing unit 11 to the use stopping unit 14 to activate the timer unit 18 (step S15).
As described above, since the data for owner identification is stored separately in the first and second storage units 12 and 13, when the IC card 10 stores the data for owner identification, an error occurs. It is possible to prevent other people's data from being stored intentionally or intentionally and using the card with other people's identification data. That is, when the data input from the input unit 21 is different from the original data, it is not stored in the second storage unit 13. In addition, although the password data is stored in the first storage unit 12, when the data is lost or stolen, the data in the second storage unit 13 is erased. Can be prevented.
[0016]
Note that the present invention is not limited to the above-described embodiments, and the IC card 10 may be provided with a transmission unit, the transmitter may be provided with a reception unit, or a part of the configuration described in the embodiment may be applied. .
In the above description, one IC card and one transmitter have been described. However, the inconvenience of having a plurality of transmitters can be eliminated by making a single transmitter correspond to a plurality of IC cards. it can. In this case, in the case of the above embodiment, it can be realized by making the PIN code data of the respective IC cards the same. Further, when the password data of the IC card is different, a plurality of password data may be constantly transmitted from the transmitter. In the above description, the password data is described. However, the password data is not necessarily limited to the data set in the host computer, and may be determined only between the IC card and the transmitter. The owner may be freely changeable.
Further, the transmitter is more secure than providing a switch for erasing internal data. Further, if a data erasing signal is transmitted to the IC card by this switch, an effect can be exhibited against an emergency theft or the like.
[0017]
【The invention's effect】
As described above, the present invention can be used as it is when the user uses it normally, and can be quickly disabled when the IC card is lost or stolen. In addition, an IC card that can no longer be used can be made reusable by using a transmitter or the like. Further, security can be improved and usability can be improved.
can do.
[Brief description of the drawings]
FIG. 1 is a block diagram of a device for preventing unauthorized use of an IC card according to an embodiment of the present invention. FIG. 2 is a flowchart showing an internal processing flow of the IC card constituting the device. Flowchart showing the processing flow when returning to a reusable state [Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 IC card 11 Data processing part 12 1st memory | storage part 13 2nd memory | storage part 14 Use stop part 15 Receiving part 16 Power supply part 18 Timer part 19 Reset part 20 Transmitter 21 Input part 22 Storage part 23 Transmitting part

Claims (2)

  An IC card and a transmitter that transmits a radio signal to the IC card constitute an unauthorized use prevention device for the IC card, and the IC card includes a transmitter that transmits a radio signal to the transmitter; A receiving unit that receives a radio signal from the transmitter; and a storage unit that stores data for identifying the owner; the transmitter includes a transmitting unit that transmits a radio signal to the IC card; A receiving unit for receiving a radio signal from the IC card, and a storage unit for storing data for identifying the owner or the IC card, and a predetermined time between the transmitter and the IC card. An apparatus for preventing unauthorized use of an IC card, wherein when the wireless signal cannot be transmitted / received, the data stored in the storage unit of each of the IC card and the transmitter is erased or disabled.   The transmitter is provided with an input means for setting data for identifying the owner or the IC card, and the input data is transmitted to the storage unit of the IC card by the transmitter and stored. 2. The apparatus for preventing unauthorized use of an IC card according to claim 1, wherein

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